function to log hello every 2 seconds after the server is started code example
Example 1: get timer start adding the started at time js
var start_at = new Date('2020-06-29 12:00:00');
var x = setInterval(function() {
var now = new Date();
var distance = now - start_at;
var days = Math.floor(distance / (1000 * 60 * 60 * 24));
var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60));
var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60));
var seconds = Math.floor((distance % (1000 * 60)) / 1000);
document.getElementById("demo").value = hours + "h "
+ minutes + "m " + seconds + "s ";
}, 1000);
Example 2: js setinterval vs settimeout
var intervalID = setInterval(alert, 1000);
setTimeout(alert, 1000);